321480906 has 8 divisors (see below), whose sum is σ = 642961824. Its totient is φ = 107160300.

The previous prime is 321480869. The next prime is 321480923. The reversal of 321480906 is 609084123.

It is a sphenic number, since it is the product of 3 distinct primes.

321480906 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26790070 + ... + 26790081.

It is an arithmetic number, because the mean of its divisors is an integer number (80370228).

Almost surely, 2^321480906 is an apocalyptic number.

321480906 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321480906 is a wasteful number, since it uses less digits than its factorization.

321480906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53580156.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 321480906 is about 17929.8886220746. Note that the first 3 decimals coincide. The cubic root of 321480906 is about 685.0438858700.

The spelling of 321480906 in words is "three hundred twenty-one million, four hundred eighty thousand, nine hundred six".